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Test Code STAT6 Signal Transducer and Activator of Transcription 6 (STAT6), Technical Component Only


Shipping Instructions


Attach the green pathology address label and the pink Immunostain Technical Only label included in the kit to the outside of the transport container.



Specimen Required


Supplies: Immunostain Technical Only Envelope (T693)

Specimen Type: Tissue

Container/Tube: Immunostain Technical Only Envelope (T693)

Preferred: 2 unstained positively charged glass slide (25 x 75 x 1 mm) per test ordered; sections 4-microns thick.

Acceptable: Formalin-fixed, paraffin-embedded (FFPE) tissue block

Additional Information:

1. Information on accessing digital images of IHC stains and the manual requisition form can be accessed through this website: www.mayomedicallaboratories.com/test-info/ihc/index.html

2. Clients ordering stains using a manual requisition form will not have access to digital images.

3. Clients wishing to access digital images must place the order for IHC stains electronically. Information regarding digital imaging can be accessed through this website: www.mayomedicallaboratories.com/test-info/ihc/faq.html


Secondary ID

70554

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
IHTOI IHC Initial, Tech Only No No
IHTOA IHC Additional, Tech Only No No

Method Name

Immunohistochemistry

Reporting Name

STAT6 IHC, Tech Only

Specimen Type

TECHONLY

Specimen Stability Information

Specimen Type Temperature Time
TECHONLY Ambient (preferred)
  Refrigerated 

Reject Due To

Hemolysis

NA

Lipemia

NA

Icterus

NA

Other

Wet/frozen tissue

Cytology smears

Nonformalin fixed tissue

Nonparaffin embedded tissue

Noncharged slides

ProbeOn slides

Clinical Information

Signal transducer and activator of transcription 6 (STAT6) is a signal transducer/transcription activator expressed in the cytoplasm of various normal tissues including bladder epithelium, bronchial epithelium, and epidermis. NAB2-STAT6 fusions have recently been described in the majority of solitary fibrous tumors (SFT), and lead to aberrant strong nuclear STAT6 staining.

Interpretation

This test includes only technical performance of the stain (no pathologist interpretation is performed). If diagnostic consultation by a pathologist is required order PATHC / Pathology Consultation.

 

The positive and negative controls are verified as showing appropriate immunoreactivity. If a control tissue is not included on the slide, a scanned image of the relevant quality control tissue is available upon request. Contact 855-516-8404.

 

Interpretation of this test should be performed in the context of the patient's clinical history and other diagnostic tests by a qualified pathologist.

Clinical Reference

1. Doyle LA, Vivero M, Fletcher CD, et al: Nuclear expression of STAT6 distinguishes solitary fibrous tumor from histologic mimics. Mod Pathol 2014 Mar;27(3):390-395

2. Schweizer L, Koelsche C, Sahm F, et al: Meningeal hemangiopericytoma and solitary fibrous tumors carry the NAB2-STAT6 fusion and can be diagnosed by nuclear expression of STAT6 protein. Acta Neuropathol 2013;125:651-658

3. Robinson DR, Wu YM, Kalyana-Sundaram S, et al: Identification of recurrent NAB2-STAT6 fusions in solitary fibrous tumor by integrative sequencing. Nat Genet 2013;45(2):180-185

4. Chmielecki J, Crago AM, Rosenberg M, et al: Whole-exome sequencing identifies a recurrent NAB2-STAT6 fusion in solitary fibrous tumors. Nat Genet 2013;45(2):131-132

Day(s) and Time(s) Performed

Monday through Friday

Analytic Time

1 day

Performing Laboratory

Mayo Medical Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

88342-TC, primary

88341-TC, if additional IHC

LOINC Code Information

Test ID Test Order Name Order LOINC Value
STAT6 STAT6 IHC, Tech Only In Process

 

Result ID Test Result Name Result LOINC Value
70866 STAT6 IHC, Tech Only No LOINC Needed